Governor-controlled mechanism for internal-combustion engines



Jul 3, 1928.

1,675,995 H. G. STEARNS GOVERNOR CONTROLLED MECHANISM FOR INTERNALCOMBUSTION ENGINES 2 Sheets-Sheet 1 Filed Feb. 19, 19.27

July 3, 1928.

H. G. 'STEARNS GOVERNOR CONTROLLED MECHANISM FOR INTERNAL COMBUSTIONENGINES Filed Feb. 19, 1927 2 Sheets-sheet 2 Inventor Q; S ZZQ 7778,

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Attornqy Patented July 3, 1928.

UNITED STATES PATENT OFFICE.

HENRY G. STEARNS, OF ARAPAHOE, NEBRASKA.

Application filed February 19, 1927. Serial No. 169,598.

The present invention relates to a governor controlled mechanism forinternal combustion engines and has for its prime object to provide anexceedingly compact and convenient structure which is associated with awater pump and driven by fan belt and has a speed responsive device forcontrolling the throttle valve of the engine so as to regulate the speedthereof in accordance with the in load-thereon.

A still further important object of the invention lies in the provisionof a structure of this nature which is exceedingly simple, thoroughlyefficient and reliable in operation, comparatively inexpensive tomanufacture and install, and otherwise well adapted to the purpose forwhich it is designed.

l fith the above and numerous other objects in view as will appear asthe descripac tion proceeds, the invention resides in certain novelfeatures of construction, and in the combination and arrangement ofparts as will be hereinafter more fully described and claimed.

In the drawing Figure 1 is a fragmentary side elevation of an internalcombustion engine showing my improved mechanism associated therewith,

Fig. 2 is a top plan view thereof,

Fig. 3 is an enlarged detail transverse vertical section takensubstantially on'the line 33 of Fig. 2,

Fig. ei is an enlarged detail elevation of the governor or speedresponsive portion of the device.

Referring to the drawing in detail, it will be seen that the letter Adenotes generallyan internal combustion engine of any preferred type. Byway of example, the internal combustion engine herein illustrated is ofthe Ford type and comprises the usual engine block 5, the fan pulley 6,and the carburetor 7 upon-other usual conventional elements which it isnot necessary to mention specifically herein. The numeral 8 denotes awater pump mechanism attachable by ring 9 and fastening elements 10 tothe engine block 5 to be associated with the water jacket thereof in theusual well known manner. A bracket arm 11 extends integrally andforwardly from the ring 9 and is slightly bowed intermediate its ends asat 12 and formed with an abutment 13 at the center of the bowed portionon the convex side thereof to abut a portion of the engine block andthen continues forwardly and terminates laterally and outwardly in abearing sleeve 14:. A propeller shaft 15 is operatively connected withthe pump mechanism 8 and extends forwardly therefrom being jourualedthrough the bearing sleeve 1st and having fixed to its forward end apulley 1G for en gaging fan belt 17 that is trained over the belt pulley6. A hose '18 is coupled as at 19 in any suitable manner with the pumpmechanism 8 and extends downwardly and forwardly to the bottom of theradiator, not shown, in the usual well known manner. An elongatedfiat-like bar 20 has its internuuliate por ion fixed to the casing ofthe mechanism 8 and fastening element 21 and the rear end thereof iscurved outwardly and forwardly as at 22 while the forward end thereof istwisted at right angles and bifurcated at its terminal as is denoted atL8. Pivotally mounted as at 24- in the bifurcated end 23 is a lever 25.A collar 26 is mounted on the shaft 15 being held in different adjustedpositions by set screws 27. A grooved collar 28 is loose on the shaft15. Flat springs 29 are pivotally engaged as at 30 with the collar 26and as at 31 with the collar 28. lVeight elements 32 are mountedintermediate the ends of the springs 29. A coil spring 33 is disposedabout the shaft 15 to impinge against the collars 26 and 28. The collars26 and 28 with springs 29 and the weight elements 32 form the speedresponsive device. The lever 25 has one end in the form of a fork 35 theextremities of which have pins 36 extending into the groove of thegroove collar 28. A spring 37 is engaged with a lug 38 projectinglaterally from the bar 20 and is engaged with an intermediate portion ofthe lever-25 to normally hold it in the position shown clearly in Figure2, that is, with the springs 27 substantially straight. A link section88 is pivotally engaged as at 39 with the other end of the lever 25 andhas a lateral eye extension 40 which receives the threaded end of a linksection 41 which is held in different adjusted positions in relation tosec end of the bell crank lever 43 by a pin 48 piercing one of theapertures 46. This rod 47 is connected with the crank 49 of the throttlevalve associated with the carbureter 7.

-When the device has been properly adjusted and the engine is inoperationit will be seen that as the load lightens, the speedof theengine will tend to increase so that the weight elements 32, bycentrifugal force,

7 will spread outwardly and thereby bow outwardly the springs 29 toshift the collar 28 rearwardly, rockthe lever and pull forwardly on thelink 38, 41, and thereby rock the bell crank lever 43. The rocking ofthe bell crank lever 43 as just described will pull the rod 47 so thatthe crank 49 is turned to closethe throttle valve so that the enginewill then slow down. The spring 33 will return the parts as will bequite apparent for opening the throttle as the speed decreases below thedesired rate.

7 It is thought that the construction, operation, and advantages of thisinvention, will now be quite apparentto those skilled in this artwithout a more detailed description thereof. The present embodiment'ofthe invention has been disclosedin detail merely by way ofexample sincein actual practice it attains the features of advantage enumerated asdesirable in the statement of the invention and in the abovedescription. It willbe apparent that the changes in the details ofconstruction, and in the combination and arrangement of parts ma be resorted to without departing from tie spirit or scope of the invention ashereinafter claimed or sacrificing any of its advantages. Having thusdescribed my invention, what I claim as new is r v 1 A device of theclass described including awater pump mechanism, a bracket arm extendingforwardly from the water pump mechanism and terminating in a bearingsleeve, a propeller shaft for the water pump mechanism journaled in thebearing sleeve, a belt engaging pulley on the shaft, a speed responsivemeans controlled by the shaft and associated therewith, a bar mountedintermediate its ends on the water pump mechanism and having its rearend curved outwardly and forwardly, a bell crank lever pivoted inthe'extremity of the curved rear end of the bar, the forward. end of thebar being twisted and bifurcated, a lever pivoted Y in thebifurcated'end and controlled by the speed responsive means, a linkstructure between the two levers, and a rod associated with the bellcrank lever for controlling a throttle valve.

2. A device of the class described including a water pump mechanism, abracket arm extending forwardly from the water pump mechanism andterminating in a bearing sleeve, a propeller shaft for the waterpump'mechanism journaled in the bearing sleeve, a belt engaging pulleyon the shaft, a speed responsive means controlled by the shaft andassociatedtherewith, a bar mounted intermediate its ends on the waterpump mechanism andhaving itsrear end curved outwardly and forwardly, abell crank lever pivoted in the extremity of the curved rear end of thebar, the forward end of the bar being twisted and bifurcated, a leverpivoted in the bifurcated end and controlled by the speed responsivemeans, a link structure between the two levers, and a rod associatedwith the bell crank lever for controlling a throttle valve, said linkbeing adjustable.

3. A device of the class described including a water pump mechanism, abracket arm extending forwardly from the water pump mechanism andterminating in a bearing sleeve, a propeller shaft for the water pumpmechanism journaled in the bearing sleeve, a belt engaging'pulley on theshaft, a speed responsive means controlled by the shaft and associatedtherewith, a bar mounted-intermediateits ends on the water pump mech-.anism and having its rear end curved outwardly and forwardly, a bellcrank lever pivoted in the extremity of the curved rear end of the bar,the forward end of the bar being twisted and bifurcated, a lever pivotedin the bifurcated end and controlled by the speed responsive means, alink structure between the two levers, a rod associated with the bellcrank lever for controlling a throttle valve, said link beingadjustable, a lug extending laterally from the bar, and-a spring engagedwith the lug and with the second mentioned lever.

4. A device of the class described including a water pump mechanism, abracket arm extending forwardly from the water pump mechanism andterminating in a. bearing sleeve, a propeller shaft for the water pumpmechanismjournaled in the bearing sleeve, a belt engaging pulley on theshaft, a speed responsive means controlled by the shaft and asociatedtherewith, a bar mounted intermediate its ends on the water pumpmechanism and having its rear end curved outwardly and forwardly,a bell'crank lever pivoted in the extremity of the curved rear end of the bar,the forwardend of the bar being twisted and bifurcated, a lever pivotedin the bifurcated end and controlled by the speed responsive means, alink structure between'the two levers, a rod associated with the bellcrank lever for controlling a throttle valve, said speed responsivemeans comtheir ends, and a coil spring on the shaft prising a collar onthe shaft, a set screw impinging against the two collars, the secholdingthe collar in position on the shaft, 0nd collar being grooved and thesecond 10 a second collar loose on the shaft, a pluralmentioned leverhaving pins extending into ity of flat springs, means for pivoting thethe groove thereof.

ends of the fiat springs to the collars, Weight In testimony whereof Iaffix my signature. elements on the fiat springs intermediate HENRY G,STEARNS.

